my anger, the power of a prayer, life without

Yesterday I was angry with my second sister.
She took my favorite badminton racket without my permission again. Yes, again.
This was not her first time nor was it the second.
I got SO mad at her (over a trival matter like this, yes)

What has gotten into me?
Chill, Daniel.
Then, this part of the 主祷文 surfaced in my mind.
免我们的债,如同我们免了人的债.
If I want GOD to forgive me for my sins, I must first forgive my sister.
(Sidetrack: This reminded me of the parable of the unmerciful servant. Matt 18:23-35 )
Knowing that, I did a simple prayer. Miraculously, the anger in me vanished. (So I did not yell at my second sister in the end.)